At 9 a.m. this morning an armed man entered the FBI field office in Cincinnati and tried to shoot his way past security. An exchange of gunfire of some sort ensued. The man retreated and then drove off. This led to a chase and finally a standoff with the armed man at which there were more exchanges of gunfire — apparently in a cornfield. That standoff apparently continues, after more exchanges of gunfire. Thus far there are no reports of injuries. There are unconfirmed repots that assailant was wearing body armor and had a nail gun in addition to an AR-15 style rifle.
From the Twitter account of the Cincinnati FBI field office …
At approximately 9 AM this morning an armed subject attempted to breach the Visitor Screening Facility at #FBI Cincinnati. After an alarm and a response by FBI special agents, the subject fled north onto Interstate 71.
Appears to be a fairly large lockdown in the surrounding area.
More details here from TPM team.
This post will be updated with new information.